CN104790950B - Optimized mining middle-deep blasthole millisecond blasting slot cutting method - Google Patents
Optimized mining middle-deep blasthole millisecond blasting slot cutting method Download PDFInfo
- Publication number
- CN104790950B CN104790950B CN201510107718.5A CN201510107718A CN104790950B CN 104790950 B CN104790950 B CN 104790950B CN 201510107718 A CN201510107718 A CN 201510107718A CN 104790950 B CN104790950 B CN 104790950B
- Authority
- CN
- China
- Prior art keywords
- blasthole
- cutting
- hole
- vertical
- cut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 57
- 238000005422 blasting Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005065 mining Methods 0.000 title claims abstract description 29
- 238000005474 detonation Methods 0.000 claims abstract description 31
- 238000005553 drilling Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 9
- 239000002360 explosive Substances 0.000 claims description 7
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses an optimized mining middle-deep blasthole millisecond blasting slot cutting method. The method includes the steps of: vertically driving one to two rows of emplacements outward on the left side and right side of a mining tunnel's end, performing slag tapping to form a cutting lug part; drilling 13-15 vertical blastholes in a rectangular vertical blasthole arrangement area at the tunnel top; drilling 2-3 groups of fan-shaped plane slope expansion blastholes respectively on two long edge outsides corresponding to the top surface of the cutting lug part, with each group consisting of 3-6 blastholes; employing a millisecond blasting procedure, subjecting millisecond short delay detonating cord detonator to segmented detonation, firstly detonating the vertical blastholes in the rectangular vertical blasthole arrangement area, and then detonating the groups of fan-shaped plane slope expansion blastholes from the inside out in order so as to form a cutting slot free surface. The method provided by the invention greatly improves the slot cutting effect, completely employs middle-deep blasthole slot cutting, is safe and easy in construction, reduces the construction amount of cutting tunnels and cutting wells, greatly reduces the cutting cost, and is also conducive to forming extraction ore breaking conditions as soon as possible.
Description
Technical field
The present invention relates to the cutting kerve method of sublevel caving method without sill pillar mining, in particular in a kind of mining of Optimization-type
Kerve method is cut in deep blasting hole short-delay blasting.
Background technology
Cutting kerve is a vital link in sublevel caving method without sill pillar mining, used as initial ore caving freedom
Face and compensation space, can directly affect ensuing blast actual mining be smoothed out.
The cutting trough-pulling construction method in general mine is that kerve method, cutting well and middle deep blasting hole are combined with cutting well in cutting lane
Joint kerve method or the symmetrical blasthole wedge shape that inclines cut kerve method, such as cutting of the Chinese patent notification number for CN102943673A
Deep hole and the united cutting method of cutting The Small Well, a kind of large span blasthole kerve work of the Chinese patent notification number for CN1635264A
Skill.Above construction method is both needed to first construct out cutting lane or cutting well, then carries out middle deep blasting hole construction on this basis.These
The construction work amount of method is big, and working environment is dangerous, and is running into back soft broken or fine ore cannot be according to normal
When rule method digging cutting lane and cutting well, above-mentioned traditional cutting kerve method is difficult to, and kerve effect is poor, success rate
It is relatively low.
The content of the invention
Present invention aim to overcome the shortcomings of existing for prior art, there is provided deep blasting hole in a kind of Optimization-type mining
Kerve method is cut in short-delay blasting.
For achieving the above object, deep blasting hole short-delay blasting cutting kerve method in the Optimization-type mining designed by the present invention,
Comprise the following steps：
1) ear operation is drawn in cutting：One to two artillery salvo is vertically tunneled respectively outwards in the end left and right sides of mining tunnel route
Position, forms cutting and draws ear position after slagging tap, the cutting draws ear position to form the initial compensation space of mining tunnel route；
2) Drilling vertical hole：In with the longitudinal centre line of the end top surface cutting well area of mining tunnel route and laterally
Heart line delimit one piece of rectangular vertical steel for shot area, along the week in the rectangular vertical steel for shot area respectively as longitudinal and transverse Vertical Centre Line
Side and on longitudinal centre line and cross central line 13～15 vertical holes of Drilling；
3) Drilling expands side blasthole：The top of ear position is drawn on the outside of the two long sides in rectangular vertical steel for shot area corresponding to cutting
The expansion side blasthole in face 2～3 groups of fan-shaped row faces of difference Drilling, during per group of expansion helps the fan-shaped row face formed by blasthole to be all transversely to the machine direction
Heart line or parallel to cross central line, per group of quantity for expanding side blasthole is 3～6；Wherein, outermost expands side blasthole relative level
The inclination angle in face is 45～55 °, and middle other expand helps the inclination angle of blasthole incremented by successively, and most inclining for side blasthole relative level is expanded in inner side
Angle is 90 °；
4) cut kerve operation：Using short-delay blasting program, the segmentation detonation of msdelayed light emission Nonel detonator, blasting sequence are first
First detonate the vertical hole in rectangular vertical steel for shot area, provides the sufficient scope of freedom for ensuing blast, then from it is interior outward according to
The expansion side blasthole in secondary detonation each group sector row face, so as to form the cutting groove scope of freedom.
Step 2 of the present invention) in, the dimensions in rectangular vertical steel for shot area be length × wide=(1.8～2.2m) ×
(0.8～1.2m), altogether Drilling have 14 vertical holes；Wherein：
First, second vertical hole is arranged on the longitudinal, and is symmetrically positioned in 80～150mm of cross central line both sides
Place；
Three, the 4th vertical holes are arranged on cross central line, and be symmetrically positioned in longitudinal centre line both sides 120～
At 200mm；
5th, the straight blasthole of sextuple is arranged on the longitudinal centre line on the outside of first, second vertical hole, and respectively
200～300mm equidistant from distance is kept with first, second vertical hole；
Seven, the eight, the nine, the tenth vertical holes are oppositely disposed in the two long sides in rectangular vertical steel for shot area two-by-two
Section outside, and 600～800mm equidistant from distance is kept with longitudinal centre line respectively；
11st, the 12nd, the 13rd, the 14th vertical hole be arranged in four of rectangular vertical steel for shot area
Corner.
Step 2 of the present invention) in, first, second vertical hole is the emptying aperture for not loading explosive.
Step 3 of the present invention) in, Drilling is respectively symmetrically on the outside of the two long sides in rectangular vertical steel for shot area 2 groups of fan-shaped rows
The expansion side blasthole in face, per group of quantity for expanding side blasthole is 4；Wherein：
The expansion side blasthole in the fan-shaped row face of draw ear position top surface anterior one group is cut positioned at left side by from inside to outside cloth successively
The the 15th, the 16th, the 17th, the 18th expansion side blasthole put is constituted；
The expansion side blasthole in the fan-shaped row face of draw ear position top surface anterior one group is cut positioned at right side by from inside to outside cloth successively
The the 19th, the 20th, the 21st, the 22nd expansion side blasthole put is constituted；
Cut positioned at left side the expansion side blasthole in one group of ear position top surface rear portion fan-shaped row face is drawn by from inside to outside cloth successively
The the 23rd, the 24th, the 25th, the 26th expansion side blasthole put is constituted；
Cut positioned at right side the expansion side blasthole in one group of ear position top surface rear portion fan-shaped row face is drawn by from inside to outside cloth successively
The the 27th, the 28th, the 29th, the 30th expansion side blasthole put is constituted.
Step 3 of the present invention) in, common the rising of the expansion side blasthole in each group sector row face for drawing ear position is cut corresponding to left side
Bore point and be also arranged symmetrically with the common trip-out point of the expansion side blasthole that each group sector row face for drawing ear position is cut corresponding to right side,
And two common space D=500～1500mms of the point with rectangular vertical steel for shot head of district side that pull out of hole.
Step 3 of the present invention) in, for the expansion side blasthole in same group of fan-shaped row face, between the adjacent bottom hole for expanding side blasthole
Away from d=2.0～2.8m.
Step 2 of the present invention) and step 3) in, a diameter of 75～105mm of all vertical holes and expansion side blasthole, hole depth are
11～14m.
Step 4 of the present invention) in, using comprising the following steps that for short-delay blasting program, msdelayed light emission Nonel detonator point eight
Section is from inside to outside detonated successively：
First paragraph the three, the 4th vertical holes of detonation；
Second segment detonation the 5th, the straight blasthole of sextuple；
3rd section of the seven, the eight, the nine, the tenth vertical holes of detonation；
4th section of detonation the 11st, the 12nd, the 13rd, the 14th vertical hole；
Side blasthole is expanded in 5th section of detonation the 15th, the 19th, the 23rd, the 27th；
Side blasthole is expanded in 6th section of detonation the 16th, the 20th, the 24th, the 28th；
Side blasthole is expanded in 7th section of detonation the 17th, the 21st, the 25th, the 29th；
Side blasthole is expanded in 8th section of detonation the 18th, the 22nd, the 26th, the 30th, ultimately forms cutting groove freedom
Face.
The beneficial effects of the present invention is：Whole deep blasting hole kerves using in, construction safety are simple, reduce cutting lane and
The construction volume of cutting well, significantly reduces cutting cost, is also beneficial to be formed as early as possible back production and falls ore deposit condition.First quick-fried vertical hole
The sufficient scope of freedom is provided for rear quick-fried expansion side blasthole, the effect of kerve is substantially increased.The present invention solves bottom-column-free sectional
Cutting when cutting lane and cutting well cannot be conventionally dug in Caving Method with Large Space mining in break and broken orebody or fine ore location
Kerve problem is cut, the method has very strong application value.
Description of the drawings
Fig. 1 is the lateral orientation schematic diagram of blasthole in present invention cutting kerve method.
Fig. 2 is that blasthole looks up orientation schematic diagram in present invention cutting kerve method.
Fig. 3 is the blasting sequence figure of blasthole in present invention cutting kerve method.
Specific embodiment
In order to preferably explain the present invention, the present invention is made further specifically below in conjunction with the drawings and specific embodiments
It is bright, but they do not constitute restriction to the present invention.
The test effect of the present invention is described in detail with Jinshandian Iron Mine.Jinshandian Iron Mine complex geologic conditions,
Ore-rock soft broken, clay content are high, and interlayer is more, and interspersed not uniform thickness kaolinite soil layer and choritization alteration soft rock, into lane extreme difference.
Jinshandian Iron Mine adopts sublevel caving method without sill pillar, and ro om -character parameter is miding level height 70m, height of lift 14m, drift interval
16m, tunnel width 3.6m, high 3.2m.
Using deep blasting hole short-delay blasting cutting kerve method in the Optimization-type mining that the present invention is carried out, comprise the following steps：
1) ear operation is drawn in cutting：As shown in Fig. 2 in the outwards vertical pick respectively of the end left and right sides of mining tunnel route 10
Enter one to two artillery salvo position, cutting is formed after slagging tap and draws ear position 20, the cutting draws ear position 20 to form mining tunnel route 10
Initial compensation space；
2) Drilling vertical hole operation：As shown in Figure 2,3, with the end top surface cutting well area of mining tunnel route 10
, respectively as longitudinal and transverse Vertical Centre Line, the rectangle for delimiting a block length × wide=2m × 1m hangs down for longitudinal centre line 40 and cross central line 50
Straight steel for shot area 30, along the periphery in the rectangular vertical steel for shot area 30 and in longitudinal centre line 40 and cross central line
14 vertical holes of Drilling on 50；Wherein：
First, second vertical hole 1,2 is arranged on longitudinal centre line 40, and is symmetrically positioned in 50 both sides 80 of cross central line
At～150mm；First, second vertical hole 1,2 is the emptying aperture for not loading explosive；
Three, the 4th vertical holes 3,4 are arranged on cross central line 50, and are symmetrically positioned in 40 both sides of longitudinal centre line
At 120～200mm；
5th, the straight blasthole of sextuple 5,6 is arranged in the longitudinal centre line 40 on the outside of first, second vertical hole 1,2
On, and 200～300mm equidistant from distance is kept with first, second vertical hole 1,2 respectively；
Seven, the eight, the nine, the tenth vertical holes 7,8,9,10 are oppositely disposed in rectangular vertical steel for shot area 30 two-by-two
Two long side stage casings on the outside of, and respectively with longitudinal centre line 40 keep 600～800mm equidistant from distance；
11st, the 12nd, the 13rd, the 14th vertical hole 11,12,13,14 be arranged in rectangular vertical blasthole
Four corners in arrangement area 30.
3) the expansion side blasthole in Drilling sector row face：As shown in Figure 1, 2, outside the two long sides in rectangular vertical steel for shot area 30
Side draws the top surface of ear position 20 to be respectively symmetrically the expansion side blasthole in the fan-shaped row face of 2 groups of Drilling corresponding to cutting, and per group is expanded blasthole institute of side
The fan-shaped row face of formation is all transversely to the machine direction centrage 40 or parallel to cross central line 50, and per group of quantity for expanding side blasthole is 4
It is individual；Wherein, the inclination angle that outermost expands side blasthole relative level is 45～55 °, and middle other inclination angles for expanding side blasthole are passed successively
Increase, it is 90 ° that the inclination angle of side blasthole relative level is expanded in most inner side；Wherein：
The expansion that the fan-shaped row face of draw 20 top surface of ear position anterior one group is cut positioned at left side helps blasthole by successively from inside to outside
15th, the 16th, the 17th, the 18th expansion side blasthole 15,16,17,18 of arrangement is constituted；
The expansion that the fan-shaped row face of draw 20 top surface of ear position anterior one group is cut positioned at right side helps blasthole by successively from inside to outside
19th, the 20th, the 21st, the 22nd expansion side blasthole 19,20,21,22 of arrangement is constituted；
The expansion that one group of fan-shaped row face for drawing 20 top surface rear portion of ear position is cut positioned at left side helps blasthole by successively from inside to outside
23rd, the 24th, the 25th, the 26th expansion side blasthole 23,24,25,26 of arrangement is constituted；
The expansion that one group of fan-shaped row face for drawing 20 top surface rear portion of ear position is cut positioned at right side helps blasthole by successively from inside to outside
27th, the 28th, the 29th, the 30th expansion side blasthole 27,28,29,30 of arrangement is constituted.
The expansion that each group sector row face for drawing ear position 20 is cut corresponding to left side is helped the common trip-out point O of blasthole and is corresponded to
Right side is cut the common trip-out point O ＇ of the expansion side blasthole in each group sector row face for drawing ear position 20 and is also arranged symmetrically, and two common
With space D=500～1500mm of the point with 30 long side of rectangular vertical steel for shot area that pull out of hole.
For the expansion side blasthole in same group of fan-shaped row face, the adjacent bottom hole spacing d=2.0～2.8m for expanding side blasthole.
4) cut kerve operation：As shown in figure 3, adopting short-delay blasting program, eight sections of msdelayed light emission Nonel detonator point rises
Quick-fried, blasting sequence detonates the vertical hole in rectangular vertical steel for shot area 30 first, provides the sufficient scope of freedom for ensuing blast,
Then from the expansion side blasthole in interior each group sector row face of detonating successively outward, so as to form the cutting groove scope of freedom：
First paragraph the three, the 4th vertical holes 3,4 of detonation；
Second segment detonation the 5th, the straight blasthole of sextuple 5,6；
3rd section of the seven, the eight, the nine, the tenth vertical holes 7,8,9,10 of detonation；
4th section of detonation the 11st, the 12nd, the 13rd, the 14th vertical hole 11,12,13,14；
Side blasthole 15,19,23,27 is expanded in 5th section of detonation the 15th, the 19th, the 23rd, the 27th；
Side blasthole 16,20,24,28 is expanded in 6th section of detonation the 16th, the 20th, the 24th, the 28th；
Side blasthole 17,21,25,29 is expanded in 7th section of detonation the 17th, the 21st, the 25th, the 29th；
Side blasthole 18,22,26,30 is expanded in 8th section of detonation the 18th, the 22nd, the 26th, the 30th.
Each blast hole projectile filling situation in the present embodiment：Vertical hole blasting condition is worst, and powder charge and firing order are most important.Respectively
Blast hole projectile filling situation is as shown in table 1：
1 each blast hole projectile filling of table and firing order
In the present embodiment, first, second vertical hole 1,2 is the expansion side in blown-out shot hole, vertical hole 3～14 and fan-shaped row face
Blasthole 15～30 is powder charge hole.
The present embodiment borehole blasting penalty coefficient is calculated：The compensation space of first paragraph detonation is provided by two blown-out shot holes.
The volume in blown-out shot hole is：VIt is empty=h × π d2/ 4=12 × π (0.075)2/ 4=0.053m3
Then offer compensation space in blown-out shot hole is：VMend=2 × VIt is empty=0.212m3
First paragraph explosion institute broken ore volume is：VOre deposit=h × s=12 × 0.2 × 0.15=0.36m3
Then first paragraph explosion penalty coefficient is：γ1=VMend/VOre deposit=0.106/0.36=29.44%
In the present embodiment, explosive specific charge is calculated：Blast hole projectile filling density p is 0.9～1kg/m3, the blasthole unit of diameter 75mm
Explosive payload be 3.97～4.48kg/m, down-hole hole charge typically press 4.0kg/m calculate.
When 28 powder charge holes are all detonated, explosive payload is：Q=20 × 48+8 × 40=1280kg
The ore-rock amount of the whole detonation avalanche in powder charge hole is：VOre deposit'=h × S=12 × 2 × 16=384m3
Then cutting kerf blasting explosive specific charge is：Q=Q/VOre deposit'=1280/384=3.33kg/m3。
Claims (8)
1. in a kind of Optimization-type mining, kerve method is cut in deep blasting hole short-delay blasting, it is characterised in that：Comprise the following steps：
1) ear operation is drawn in cutting：One to two artillery salvo is vertically tunneled respectively outwards in the end left and right sides of mining tunnel route (10)
Position, forms cutting and draws ear position (20) after slagging tap, the cutting draws ear position (20) to form the initial benefit of mining tunnel route (10)
Repay space；
2) Drilling vertical hole：With the longitudinal centre line (40) and horizontal stroke of the end top surface cutting well area of mining tunnel route (10)
To centrage (50) respectively as longitudinal and transverse Vertical Centre Line, one piece of rectangular vertical steel for shot area (30) delimited, along the rectangular vertical big gun
The periphery in hole arrangement area (30) and on longitudinal centre line (40) and cross central line (50) the vertical big gun of Drilling 13～15
Hole；
3) Drilling expands side blasthole：Ear position (20) is drawn corresponding to cutting on the outside of the two long sides in rectangular vertical steel for shot area (30)
The fan-shaped row faces of top surface 2～3 groups of Drilling of difference expansion side blasthole, per group is expanded fan-shaped row face that side blasthole formed all perpendicular to indulging
To centrage (40) or parallel to cross central line (50), per group of quantity for expanding side blasthole is 3～6；Wherein, outermost expands side
The inclination angle of blasthole relative level is 45～55 °, and middle other expand helps the inclination angle of blasthole incremented by successively, and side blasthole phase is expanded in most inner side
It it is 90 ° to the inclination angle of horizontal plane；
4) cut kerve operation：Using short-delay blasting program, the segmentation detonation of msdelayed light emission Nonel detonator, blasting sequence are risen first
The vertical hole of quick-fried rectangular vertical steel for shot area (30), provides the sufficient scope of freedom for ensuing blast, then from it is interior outward according to
The expansion side blasthole in secondary detonation each group sector row face, so as to form the cutting groove scope of freedom.
2. in Optimization-type mining according to claim 1, kerve method is cut in deep blasting hole short-delay blasting, it is characterised in that：Institute
State step 2) in, the dimensions in rectangular vertical steel for shot area (30) be length × wide=(1.8～2.2m) × (0.8～
1.2m), Drilling has 14 vertical holes altogether；Wherein：
First, second vertical hole (1,2) is arranged on longitudinal centre line (40), and is symmetrically positioned in cross central line (50) both sides
At 80～150mm；
Three, the 4th vertical holes (3,4) are arranged on cross central line (50), and are symmetrically positioned in longitudinal centre line (40) both sides
At 120～200mm；
5th, the straight blasthole of sextuple (5,6) is arranged in the longitudinal centre line on the outside of first, second vertical hole (1,2)
(40) on, and 200～300mm equidistant from distance is kept with first, second vertical hole (1,2) respectively；
Seven, the eight, the nine, the tenth vertical holes (7,8,9,10) are oppositely disposed in rectangular vertical steel for shot area (30) two-by-two
Two long side stage casings on the outside of, and respectively with longitudinal centre line (40) keep 600～800mm equidistant from distance；
11st, the 12nd, the 13rd, the 14th vertical hole (11,12,13,14) be arranged in rectangular vertical blasthole cloth
Put four corners in area (30).
3. in Optimization-type mining according to claim 2, kerve method is cut in deep blasting hole short-delay blasting, it is characterised in that：Institute
State step 2) in, first, second vertical hole (1,2) is the emptying aperture for not loading explosive.
4. in Optimization-type mining according to claim 3, kerve method is cut in deep blasting hole short-delay blasting, it is characterised in that：Institute
State step 3) in, Drilling is respectively symmetrically on the outside of the two long sides in rectangular vertical steel for shot area (30) the expansion side in 2 groups of fan-shaped row faces
Blasthole, per group of quantity for expanding side blasthole is 4；Wherein：
The expansion side blasthole in the fan-shaped row face of draw ear position (20) top surface anterior one group is cut positioned at left side by from inside to outside cloth successively
The the 15th, the 16th, the 17th, the 18th expansion side blasthole (15,16,17,18) put is constituted；
The expansion side blasthole in the fan-shaped row face of draw ear position (20) top surface anterior one group is cut positioned at right side by from inside to outside cloth successively
The the 19th, the 20th, the 21st, the 22nd expansion side blasthole (19,20,21,22) put is constituted；
The expansion side blasthole in one group of fan-shaped row face for drawing ear position (20) top surface rear portion is cut positioned at left side by from inside to outside cloth successively
The the 23rd, the 24th, the 25th, the 26th expansion side blasthole (23,24,25,26) put is constituted；
The expansion side blasthole in one group of fan-shaped row face for drawing ear position (20) top surface rear portion is cut positioned at right side by from inside to outside cloth successively
The the 27th, the 28th, the 29th, the 30th expansion side blasthole (27,28,29,30) put is constituted.
5. in Optimization-type mining according to claim 4, kerve method is cut in deep blasting hole short-delay blasting, it is characterised in that：Institute
State step 3) in, the common trip-out point (O) of the expansion side blasthole in each group sector row face for drawing ear position (20) is cut corresponding to left side
Common trip-out point (O ＇) with the expansion side blasthole in each group sector row face that ear position (20) is drawn corresponding to right side cutting is also in symmetrical
Arrangement, and two common space D=500～1500mms of the point with the long side in rectangular vertical steel for shot area (30) that pull out of hole.
6. in Optimization-type mining according to claim 4, kerve method is cut in deep blasting hole short-delay blasting, it is characterised in that：Institute
State step 3) in, for the expansion side blasthole in same group of fan-shaped row face, it is adjacent expand side blasthole bottom hole spacing d=2.0～
2.8m。
7. in Optimization-type mining according to claim 4, kerve method is cut in deep blasting hole short-delay blasting, it is characterised in that：Institute
State step 2) and step 3) in, a diameter of 75～105mm of all vertical holes and expansion side blasthole, hole depth are 11～14m.
8. in the Optimization-type mining according to any one of claim 4～6, kerve method is cut in deep blasting hole short-delay blasting, its
It is characterised by：The step 4) in, using comprising the following steps that for short-delay blasting program, eight sections of msdelayed light emission Nonel detonator point
From inside to outside detonate successively：
First paragraph the three, the 4th vertical holes (3,4) of detonation；
Second segment detonation the 5th, the straight blasthole of sextuple (5,6)；
3rd section of the seven, the eight, the nine, the tenth vertical holes (7,8,9,10) of detonation；
4th section of detonation the 11st, the 12nd, the 13rd, the 14th vertical hole (11,12,13,14)；
Side blasthole (15,19,23,27) is expanded in 5th section of detonation the 15th, the 19th, the 23rd, the 27th；
Side blasthole (16,20,24,28) is expanded in 6th section of detonation the 16th, the 20th, the 24th, the 28th；
Side blasthole (17,21,25,29) is expanded in 7th section of detonation the 17th, the 21st, the 25th, the 29th；
Side blasthole (18,22,26,30) is expanded in 8th section of detonation the 18th, the 22nd, the 26th, the 30th, ultimately forms and cuts
Cut the groove scope of freedom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107718.5A CN104790950B (en) | 2015-03-12 | 2015-03-12 | Optimized mining middle-deep blasthole millisecond blasting slot cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107718.5A CN104790950B (en) | 2015-03-12 | 2015-03-12 | Optimized mining middle-deep blasthole millisecond blasting slot cutting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104790950A CN104790950A (en) | 2015-07-22 |
| CN104790950B true CN104790950B (en) | 2017-04-12 |
Family
ID=53556085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510107718.5A Active CN104790950B (en) | 2015-03-12 | 2015-03-12 | Optimized mining middle-deep blasthole millisecond blasting slot cutting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790950B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454158A (en) * | 2019-09-18 | 2019-11-15 | 中国恩菲工程技术有限公司 | Fan shaped medium length hole charge constitution and fan shaped medium length hole blasting method |
| CN114087934B (en) * | 2021-11-16 | 2023-03-24 | 铜陵有色金属集团股份有限公司 | Method for improving single blasting slot height of VCR mining method |
| CN114812314A (en) * | 2022-06-15 | 2022-07-29 | 甘肃镜铁山矿业有限公司 | Broaching and blasting hole distribution method for medium-length hole auxiliary cutting well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262965A (en) * | 1979-09-24 | 1981-04-21 | Occidental Oil Shale, Inc. | Triangular blasting into limited voids for vertical free face retorts |
| CN1635264A (en) * | 2003-12-26 | 2005-07-06 | 宝钢集团上海梅山有限公司 | Large span blast hole groove broaching process |
| CN101737050A (en) * | 2008-11-25 | 2010-06-16 | 宝钢集团上海梅山有限公司 | Deep hole arranging method in mining |
| CN102943673A (en) * | 2012-10-12 | 2013-02-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Cutting method combining deep hole cutting and small well cutting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5969832B2 (en) * | 2012-06-20 | 2016-08-17 | 株式会社熊谷組 | Concrete crushing method by blasting |
-
2015
- 2015-03-12 CN CN201510107718.5A patent/CN104790950B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262965A (en) * | 1979-09-24 | 1981-04-21 | Occidental Oil Shale, Inc. | Triangular blasting into limited voids for vertical free face retorts |
| CN1635264A (en) * | 2003-12-26 | 2005-07-06 | 宝钢集团上海梅山有限公司 | Large span blast hole groove broaching process |
| CN101737050A (en) * | 2008-11-25 | 2010-06-16 | 宝钢集团上海梅山有限公司 | Deep hole arranging method in mining |
| CN102943673A (en) * | 2012-10-12 | 2013-02-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Cutting method combining deep hole cutting and small well cutting |
Non-Patent Citations (2)
| Title |
|---|
| 无切井扇形深孔***自拉槽新方法;明世祥等;《金属矿山》;20100315(第3期);第20-22、93页 * |
| 无切巷无切井一次***拉槽法;李宗正;《金属矿山》;19931028(第10期);第12-14页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104790950A (en) | 2015-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102808622B (en) | Method for recovering ore pillar by medium-length hole and deep hole combined blasting technology | |
| CN205561688U (en) | Go up big gun hole arrangement structure to medium -length hole undercutting blasting | |
| CN106091848B (en) | It is a kind of to realize overlength, the method for high inclination-angle tunnel anchorage top bar explosion | |
| CN102182461A (en) | Efficient mining method for thick metal ore body in slanting | |
| CN104154830B (en) | Medium-length hole blasting method for underground mining | |
| CN103123247A (en) | Damping blasting method for steep dip small crossing angle layered surrounding rock small-distance tunnel excavation | |
| CN106767212B (en) | A kind of two-region undercut blast hole arrangement and its explosion well completion method of application | |
| CN105569659A (en) | Tunnel hydraulic cutting line oriented blasting roof cutting pressure relief method | |
| CN104482816B (en) | A kind of vertical periphery segment algorithm gradient presplit blasting method and device | |
| CN106767213B (en) | A kind of Roof Control blasting method of soft broken top plate ore body back production | |
| CN105937395A (en) | Fast and highly-efficient tunneling method for large section of hard-rock tunnel in coal mine by combination of fully-mechanized tunneling and blasting driving | |
| CN103306679A (en) | '|'-shaped free surface holing one-step well completion technology | |
| CN112161534B (en) | One-step mining control blasting method for mine underground upward access | |
| CN108489350A (en) | III level surrounding rock tunnel top bar speedy drivage Smooth Blasting Construction method | |
| CN108362179A (en) | A kind of energy saving cut shot method of star | |
| CN104790950B (en) | Optimized mining middle-deep blasthole millisecond blasting slot cutting method | |
| CN108049870B (en) | The induction caving mining methods of high-dipping middle thickness orebody of the upper disk containing unstable rock stratum | |
| CN114320297A (en) | Steep dip thin ore vein large diameter deep hole mining method | |
| CN106440981A (en) | Deep hole blasting method for increasing bulky productivity of joint fracture developed granite mine | |
| CN101893415A (en) | Blasting method by arch roof control and smooth-surface pillar control | |
| CN104389604A (en) | Method for forming covering layer by stope caving method | |
| CN112880501B (en) | Flight-limited hole drilling and blasting method for controlling tunnel blasting flyrock | |
| CN109372509A (en) | Arrangement method for double-hollow-hole rhombic cut holes in access filling mining | |
| CN106150505A (en) | Efficient fine blasting method for ultrathin ore body | |
| CN109029176A (en) | Sectional type cutting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181116 Address after: 430083 No. 107 Construction Sixth Road, Qingshan District, Wuhan City, Hubei Province Patentee after: Wugang Resources Group Co., Ltd. Address before: 430080 the 15 floor of block A, 999 Wuchang Friendship Road, Wuhan, Hubei (Science and technology innovation department, WISCO) Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210412 Address after: 435100 Xianshan village, Jinshandian Town, Daye City, Huangshi City, Hubei Province Patentee after: WISCO Resources Group Jinshandian Mining Co.,Ltd. Address before: 430083 No. 107 Construction Sixth Road, Qingshan District, Wuhan City, Hubei Province Patentee before: WUGANG RESOURCE GROUP Co.,Ltd. |